Cow Farts: The Next Alternative Fuel?

Surely you’d think this story is from The Onion, but no–some people really think we need to equip cows with gas-collecting backpacks, which we’d use in turn to power cars and such:

Researchers put plastic backpacks on cows, then inserted tubes into their rumens (their biggest digestive tract). They extracted the methane–about 300 liters a day. That’s enough to run a car, or a fridge for 24 hours.